ArticleJoint diseases and related surgery2025
The effects of gabapentin and pregabalin on fracture healing: A histological, radiological, and biomechanical analysis.
Article in Joint diseases and related surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Effects of soluble guanylate cyclase activator vericiguat on fracture healing in rats.Joint diseases and related surgery · 2026Article
- Functional mechanism and clinical implications of lncRNA NEAT1 in traumatic fractures and their correlation with delayed healing.Journal of orthopaedic surgery and research · 2025Article
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Authors and funding
7 authors.
Funding
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Abstract
objectivesThis study evaluated the impact of different doses of gabapentin and pregabalin on fracture healing in a rat femoral shaft model, with histological, radiological, and biomechanical assessments. MATERIALS AND
methodsSeventy male Wistar albino rats were divided into five groups: control, low-dose gabapentin (GBP-L, 300 mg/day), high-dose gabapentin (GBP-H, 3600 mg/day), low-dose pregabalin (PRG-L, 150 mg/day), and high-dose pregabalin (PRG-H, 600 mg/day), based on human equivalent doses. Bilateral femoral fractures were induced; the right femurs were prepared for radiological examination using microtomography, followed by histological analysis, whereas the left femurs were allocated for biomechanical testing. Drug administration began three weeks preoperatively and continued until sacrifice at either two or four weeks. Histological assessments included inflammation and transformation scoring and microtomography-measured callus volume. Biomechanical testing assessed maximum force and stiffness.
resultsAt the fourth week, inflammation levels were significantly higher in the GBP-H, PRG-L, and PRG-H groups compared to control (p<0.01, p<0.05, and p<0.01), while transformation scores were significantly lower in these groups (p<0.01, p<0.05, and p<0.001). Low-dose pregabalin showed a borderline transformation difference (p=0.051). Microtomography analysis showed that the GBP-H group had significantly reduced callus volume versus control by the second week (p<0.01), persisting at a lower significance by week four (p<0.05). By the fourth week, PRG-H also had reduced callus volume (p<0.05). Maximum force values by the fourth week were significantly lower in the GBP-L, GBP-H, and PRG-H groups compared to control (p<0.05 for GBP-L; p<0.01 for GBP-H and PRG-H).
conclusionThese findings suggest that these drugs, particularly with their high-dose applications, may lead to prolonged inflammation and hinder fracture healing by reducing callus volume and biomechanical integrity, potentially disrupting the transition from the inflammatory to reparative phases of healing.
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